Howden, D. H.. Money as a medium of exchange and its evolution: An elaboration on mengerian monetary economics. REVISTA PROCESOS DE MERCADO, [S. l.], v. 6, n. 1, p. 199–210, 2009. DOI: 10.52195/pm.v6i1.303. Disponível em: https://procesosdemercado.com/revista/2009/vol-6/num-1/money-as-a-medium-of-exchange-and-its-evolution-an-elaboration-on-mengerian-monetary-economics. Acesso em: 31 mar. 2026.